/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

import sun.hotspot.code.NMethod;

/*

 * @test GetNMethodTest

 * @bug 8038240

 * @library /testlibrary /testlibrary/whitebox

 * @build GetNMethodTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* GetNMethodTest

 * @summary testing of WB::getNMethod()

 * @author igor.ignatyev@oracle.com

 */

public class GetNMethodTest extends CompilerWhiteBoxTest {

    public static void main(String[] args) throws Exception {

        CompilerWhiteBoxTest.main(GetNMethodTest::new, args);

    }

    private GetNMethodTest(TestCase testCase) {

        super(testCase);

        // to prevent inlining of #method

        WHITE_BOX.testSetDontInlineMethod(method, true);

    }

    @Override

    protected void test() throws Exception {

        checkNotCompiled();

        compile();

        checkCompiled();

        NMethod nmethod = NMethod.get(method, testCase.isOsr());

        if (IS_VERBOSE) {

            System.out.println("nmethod = " + nmethod);

        }

        if (nmethod == null) {

            throw new RuntimeException("nmethod of compiled method is null");

        }

        if (nmethod.insts.length == 0) {

            throw new RuntimeException("compiled method's instructions is empty");

        }

        deoptimize();

        checkNotCompiled();

        nmethod = NMethod.get(method, testCase.isOsr());

        if (nmethod != null) {

            throw new RuntimeException("nmethod of non-compiled method isn't null");

        }

    }

}